Abstract-Terahertz antenna electronic chopper

L. A. Sterczewski^1,a), M. P. Grzelczak¹ and E. F. Plinski¹
 
1 Department of Electronics, Wroclaw University of Technology, 27 Wybrzeze Wyspianskiego St., 50-370 Wroclaw, Poland
a) Electronic mail: lukasz.sterczewski@pwr.edu.pl
Rev. Sci. Instrum. 87, 014702 (2016); http://dx.doi.org/10.1063/1.4939461
http://scitation.aip.org/content/aip/journal/rsi/87/1/10.1063/1.4939461

In this paper, we present an electronic circuit used to bias a photoconductive antenna that generates terahertz radiation. The working principles and the design process for the device are discussed in detail. The noise and shape of the wavemeasurements for a built device are considered. Furthermore, their impact on a terahertz pulse and its spectra is also examined. The proposed implementation is simple to build, robust and offers a real improvement over THz instrumentation due to the frequency tuning. Additionally, it provides for galvanic isolation and ESD protection.